TL:
1. Have their parents called them yet?
2. Where did your aunt buy the computer
3. I hople he'll arrive at the meeting on time
4. They are very sporty and they love playing sports
5. He has driven 100 kilometers so far.
6. I like this book so much. It is very useful
7. Lan has fewer books than Mai
8. Unlucky, he couldn't catch the last bus so he had to walk home